Home / 13,543.45-18,636.83-11,975.29

Finding the Fourth Proportional to 13,543.45, 18,636.83 and 11,975.29

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Solution

The fourth proportional to 13,543.45, 18,636.83 and 11,975.29 is: 16,478.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,543.45 : 18,636.83 = 11,975.29 : x
  2. Step 2: Convert to fraction form
    13,543.45/18,636.83 = 11,975.29/x
  3. Step 3: Cross multiply
    13,543.45x = 18,636.83 × 11,975.29
  4. Step 4: Simplify right side
    13,543.45x = 223,181,384.05
  5. Step 5: Solve for x
    x = 223,181,384.05/13,543.45
  6. Step 6: Final answer
    x = 16,478.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.